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Liquid transporting apparatus

a technology of liquid transporting apparatus and liquid, which is applied in the direction of centrifuges, separation processes, printing, etc., can solve the problems of high electrical system cost, achieve the effect of reducing the number of wirings, forming easily the insulating layer, and reducing the electrical system cos

Inactive Publication Date: 2011-12-13
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach allows for a significant reduction in the number of wirings, lowering electrical system costs while maintaining high responsiveness and stability in ink transport, enabling efficient operation with a substantial decrease in wiring count without compromising printing speed.

Problems solved by technology

Because of a high cost for forming the wiring pattern, the cost of the electrical system becomes high.

Method used

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  • Liquid transporting apparatus
  • Liquid transporting apparatus
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Experimental program
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Effect test

first modified embodiment

[0089]In the embodiment, as shown in FIG. 2, the first electrode in common for the plurality of individual channels is arranged, in each of the ink channels, at the upstream side of the plurality of second electrodes which are provided to the plurality of individual channels respectively. However, the first electrode may be arranged at a downstream side of the plurality of second electrodes.

[0090]For example, as in a first example shown in FIG. 9, a short channel 40 to which a plurality of individual channels 115A are joined may be provided on a downstream side of the individual channels 115A of each ink channel 112A, and a first electrode 117A may be arranged in this channel 40. In this case, since a discharge port 41 which communicates with the channel 40 is in common for the three individual channels 115A, there is a fear that a small amount of ink which has flowed from the adjacent individual channel 115A may be mixed with the ink which is discharged from a discharging area corr...

second modified embodiment

[0092]In the embodiment, each of the ink channels 12 has a main channel 14 having a wide channel width (channel cross-sectional area), which communicates with the common ink chamber 11, and the plurality of individual channels 15 is branched from this main channel 14. However, as shown in FIG. 11, partition walls 116C may be extended up to a common ink chamber 111C, and the main channel may be omitted, and a plurality of individual channels 115C of each main channel 112C may be branched directly from the common ink chamber 111C.

[0093]As shown in FIG. 11, a first electrode 117C of each of the ink channels 112C may be provided in common to individual channels 115C such that the first electrode 117C is arranged across the three individual channels 115C. In other words, the same electric potential is applied all the time to a portion of the first electrode 117C corresponding to each of the three individual channels 115C. In FIG. 11, the first electrode 117C is arranged on the upstream s...

third modified embodiment

[0094]As shown in FIG. 12, a first electrode 117D may be formed on the upper surface of the main channel 14, and a second electrode 122D may be formed on a lower surface of the three individual channels 15. Both the first electrode 117D and the second electrode 122D are covered by the insulating layer 25. In this manner, the first electrode and the second electrode may not be arranged necessarily in the same plane. Furthermore, the first electrode and the second electrode may not be necessarily arranged to be overlapping in a plan view. For example, as shown in FIG. 13, a first electrode 117E and a second electrode 122E may be arranged to be overlapping in a plan view. However, when a distance between the first electrode and the second electrode is substantial, or when an area in which the first electrode and the second electrode overlap is too close to an opening of nozzles, there is a fear that the liquid may leak out from the opening. Therefore, it is desirable that the first ele...

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PUM

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Abstract

A head includes a common ink chamber, a plurality of individual electrodes which communicate with the common ink chamber, and a plurality of ink channels through which, an ink supplied from the common ink chamber flows. Each ink channel is provided with a first electrode which is common for the individual electrodes, a plurality of second electrodes corresponding to the individual electrodes respectively, and an insulating layer which covers the first electrode and the second electrodes. Furthermore, the individual electrode of each ink channel is associated with an individual electrode of another ink channel, and the corresponding second electrodes are in electrical conduction. Accordingly, it is possible to reduce a cost of an electrical system by reducing the number of wirings which are connected to electrodes provided to each of the liquid channels.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]The present application claims priority from Japanese Patent Application No. 2007-082329, filed on Mar. 27, 2007, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a liquid transporting apparatus which transports a liquid.[0004]2. Description of the Related Art[0005]As a liquid transporting apparatus, an ink-discharge head which discharges an ink on to a printing medium such as a recording paper has hitherto been known. Such ink-discharge head includes a channel unit which has a plurality of individual ink channels including pressure chambers which communicate with nozzles, and an actuator which applies a pressure to the ink in the pressure chambers (Refer to Japanese Patent Application Laid-open No. 2003-326712 for example). However, in such ink-discharge head, as it is necessary to form individual ink channels of a m...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B41J2/06
CPCB41J2/005B41J2002/14395
Inventor SUGAHARA, HIROTO
Owner BROTHER KOGYO KK